From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 299B52080D4 for ; Wed, 5 Mar 2025 23:08:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741216138; cv=none; b=cnf+8rJpApVMlXK5VCNa06a8plO19LAsR5E1CmdUsnyHXKZh0pzSjWdBbBrSn61DXiu25GbAHcJThy3nGRhVzuOEFr6w9O6fX36JsZ3G9UTG5Mv5/ty0T04mvuYwioDH+68aSlp8iFS/BD+oyCKyLtbML05bolugp3MnNdZGk+M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741216138; c=relaxed/simple; bh=iDSCLBL5B3BWxOXgvdiVkZne8iKvTHftbvdtBS+FAMc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lDtYt3EVPfpYrKKbKXZB+g4xzySFgp8R/7hGg5ysWoCUYcZrf/0oZbVDj1rYY9EhPT4SuU+8Ek/s0oGFuG8VWmHZR6+SW0fOt0MW0rRgZuzoTYw/8r0y1DdgLkAp+EePbWWYmdjfvsnE5S/9e0DVuNV+ktu76qI2lCQuxh7Tmss= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=TIuOVivx; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="TIuOVivx" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741216133; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lRRGIfbn1O4NQuVIAQdXUxnmr9FtR81ZdEGKL5sWc/Q=; b=TIuOVivxMh36TAknYHCVJNiLCIwCX/sFFlrTR91wlFiWIXyDhh8o4dg+PS+2i0J+P7ZZBv xCUujMIGy60rTAvgvRHMCody5lghriCe18v9cdsFaUc9gt0RdF5VSf3gTP40kpFRfmrCEk wclRRRbOG2MTE96ypzp6qfteAs6sC04= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-59-EymIt6hbNLKfbKEoENAk_A-1; Wed, 05 Mar 2025 18:08:48 -0500 X-MC-Unique: EymIt6hbNLKfbKEoENAk_A-1 X-Mimecast-MFC-AGG-ID: EymIt6hbNLKfbKEoENAk_A_1741216126 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 0FE9E1809CA3; Wed, 5 Mar 2025 23:08:46 +0000 (UTC) Received: from chopper.redhat.com (unknown [10.22.88.81]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 32191300019E; Wed, 5 Mar 2025 23:08:42 +0000 (UTC) From: Lyude Paul To: dri-devel@lists.freedesktop.org, rust-for-linux@vger.kernel.org Cc: Danilo Krummrich , mcanal@igalia.com, Alice Ryhl , Maxime Ripard , Simona Vetter , Daniel Almeida , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?UTF-8?q?Bj=C3=B6rn=20Roy=20Baron?= , Benno Lossin , Andreas Hindborg , Trevor Gross , Asahi Lina , linux-kernel@vger.kernel.org (open list) Subject: [RFC v3 29/33] rust: drm: Add Device::event_lock() Date: Wed, 5 Mar 2025 17:59:45 -0500 Message-ID: <20250305230406.567126-30-lyude@redhat.com> In-Reply-To: <20250305230406.567126-1-lyude@redhat.com> References: <20250305230406.567126-1-lyude@redhat.com> Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 This is just a crate-private helper to use Lock::from_raw() to provide an immutable reference to the DRM event_lock, so that it can be used like a normal rust spinlock. We'll need this for adding vblank related bindings. Signed-off-by: Lyude Paul --- rust/kernel/drm/device.rs | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/rust/kernel/drm/device.rs b/rust/kernel/drm/device.rs index cf063de387329..3938ceb044645 100644 --- a/rust/kernel/drm/device.rs +++ b/rust/kernel/drm/device.rs @@ -11,6 +11,7 @@ error::from_err_ptr, error::Result, ffi, + sync::*, types::{ARef, AlwaysRefCounted, ForeignOwnable, Opaque}, }; use core::{marker::PhantomData, ptr::NonNull}; @@ -154,6 +155,13 @@ pub fn data(&self) -> ::Borrowed<'_> { unsafe { ::from_foreign(drm.raw_data()) }; } + /// Returns a reference to the `event` spinlock + #[allow(dead_code)] + pub(crate) fn event_lock(&self) -> &SpinLockIrq<()> { + // SAFETY: `event_lock` is initialized for as long as `self` is exposed to users + unsafe { SpinLockIrq::from_raw(&mut (*self.as_raw()).event_lock) } + } + pub(crate) const fn has_kms() -> bool { ::MODE_CONFIG_OPS.is_some() } -- 2.48.1